I have an 05 Elise. The AC works fine for about 45 min. then starts blowing hot air. If I turn the car off for a couple hours and start it up again the AC works just fine for another 45 min before it stops working again. Has anyone had this problem??? I Live in Southern Louisiana and am no where near a Lotus Dealer. Any help would be greatly Appreciated..

I'm having the same symptoms on my '06 Elise - AC starts off blowing cold and after 20-30 minutes of highway driving the air is warm and hardly blowing. Leave it off for a while and its working again. This is a great write-up...I'm going to check for the coil probe position..

Repositioning the evaporator capillary temperature sensor rarely gives satisfactory results. The real solution to to replace the sensor with the electronic version. I did this a few years ago and never had that problem again.
See here Improved AC
Michael

Repositioning the evaporator capillary temperature sensor rarely gives satisfactory results. The real solution to to replace the sensor with the electronic version. I did this a few years ago and never had that problem again.
See here Improved AC
Michael

Since checking the position costs $0.00 and takes 15 minutes I took a look. Unfortunately, the probe seems to be already positioned as prescribed - 2nd row middle, touching the evaporator fin. Looks like I'll be replacing it soon..

If it's actually blowing heated air then the probability is that the flap valves within the HVAC enclosure are not operating correctly.
If it's blowing ambient air then I would first check the refrigerant charge.
Michael

Does anyone know when Lotus started actually putting these retrofits into the Elises? I have an 05 Elise and just took it into the dealer to get the retrofit done since I have the same issue with the A/C not working after about 20 - 30 minutes and I'm tired of dealing with the heat. The dealer called and indicated that I have the updated thermostat (part number A120P0149S) in my car. I'm wonder how that is since the retrofit document indicates that this part is assocated with Feb 07 builds.

Does anyone know when Lotus started actually putting these retrofits into the Elises? I have an 05 Elise and just took it into the dealer to get the retrofit done since I have the same issue with the A/C not working after about 20 - 30 minutes and I'm tired of dealing with the heat. The dealer called and indicated that I have the updated thermostat (part number A120P0149S) in my car. I'm wonder how that is since the retrofit document indicates that this part is assocated with Feb 07 builds.

Does anyone know when Lotus started actually putting these retrofits into the Elises? I have an 05 Elise and just took it into the dealer to get the retrofit done since I have the same issue with the A/C not working after about 20 - 30 minutes and I'm tired of dealing with the heat. The dealer called and indicated that I have the updated thermostat (part number A120P0149S) in my car. I'm wonder how that is since the retrofit document indicates that this part is assocated with Feb 07 builds.

Does anyone know if there is a visual difference between the old version and the new version? The dealer is telling me that my current thermostat is identical to the part A120P0149S including the part number. I bought the car new in Sept of 05, and I know that the thermostat has never been changed out.

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